Dr. Koller is a general dentist with a keen interest in quality cosmetic and preventative dentistry. Dr. Koller has been in practice for over 30 years. He has also been a Clinical Supervisor at the School of Dental Science, Faculty of Medicine (Dentistry) at The University of Melbourne since 1990.

He is a talented and compassionate doctor who strives to maintain the highest levels of accreditation and quality. He continues to expand his knowledge by pursuing ongoing education, frequently attending courses and lectures, in order to keep up with the latest trends in dentistry.

Dr. Koller believes in providing patients with the highest standard of care and education in a clean, comfy environment.

Member Of

  • The Australian Dental Association
  • Dental Materials Group
  • The Australian Osseo-Integration Society
  • The Australian Prosthodontic Society
  • The Australian Crown and Bridge Society
  • The Australian Society of General Dentistry
  • International College of Prosthodontists
  • Field Partner of Medicine Sans Frontieres
  • Melbourne Seattle Study Club


  • Long Course in Crown and Bridge at the University of Melbourne 1990
  • Long Course is Periodontics at the University of Melbourne 1998
  • Summer School in Oral Surgery at the University of Melbourne 1994
  • Summer School in Endodontics at the University of Melbourne 1993
  • Nobel Biocare Implant Course in 1990
  • Sterio-oss Implant Course 1995
  • MIS Implant Course 2007


Accreditation practices to adopt the National Safety and Quality Health Service(NSQHS) Standards into existing quality systems.Accreditation is independent recognition that an organisation meets the requirements of governing industry standards.Health and community organisations are recognised for their commitment to best practice, quality, high performing systems and processes, and continuous improvement with the award of accreditation.QIP accreditation supports organisations to reassure their patients, consumers and clients that their team is committed to providing safe and quality service provision.


If you have dental or extra cover with any Australian private health insurance you are eligible for a rebate from your health insurance. The amount of the rebate depends on you the level of your cover. For an accurate rebate amount, consult with your private health fund prior to your visit.

Stellar Dental is a fully approved Medibank preferred provider dentist. Our onsite HICAPS facility makes it easy to place your dental insurance claims on-site.


We at Stellar Dental respect your privacy rights and have systems in place to ensure we comply with the Australian Privacy Principles.

Your personal information and medical records will be securely stored and will not be divulged to anyone except as required by other agencies involved in your dental treatment. Such agencies include (but are not limited to) confidential communications with medical specialists or dental laboratories.

Please feel free to contact us at any time if you have any questions or concerns on how your personal information is handled.


Having graduated from the University of Melbourne with a Bachelor of Dental Science, Dr Roger Newbury BDSc (Melb), LDS (Vic) worked as a locum dentist in the Tasmanian mining town of Rosebury before returning to Victoria to take up another locum job, this time in the eastern suburb of Croydon.

Six months later, he was off to London, for almost four years. There, he undertook a post-graduate course at the Eastman Dental School. He loved life in London, and from there it was relatively easy to explore not only the rest of England but also Europe. He returned to Melbourne for a holiday, then ended up settling there. A fellow dentist approached him saying his practice was for sale. He decided to buy it, and this saw him practising in Collins Street.

During this time, he developed an active interest in politics and dentistry at higher levels. In 1990, he became president of the Victorian Branch of the Australian Dental Association and was appointed to be the contract dentist for the royal tour of Prince Charles and Lady Diana. Lady Di even spoke to him in person . “A truly beautiful lady.”

Then it was on to more politics, serving on government health committees and becoming a board member on the Phillip Island Nature Park board of management. In dentistry he really enjoys working with removable prosthodontics (dentures), as well as general practice, says Dr Newbury. In 2018, he started as a demonstrator in removable prosthodontics at Melbourne University and he finds he loves dentistry as much today as when he first graduated.